船体振动有限元模型参数分析  

Analysis of Finite Element Model Parameters of Ship Vibration

作　　者：王慧 张济 何海华 张兆德 WANG Hui;ZHANG Ji;HE Haihua(School of Naval Architecture and Maritime of Zhejiang Ocean University,Zhoushan 316022;Key Laboratory of Offshore Engineering Technology of Zhejiang Province,Zhoushan 316022;Zhejiang Yangfan General-Use Machinery Manufacturing Co Ltd,Zhoushan 316022,China)

机构地区：[1]浙江海洋大学船舶与海运学院,浙江舟山316022 [2]浙江省近海海洋工程技术重点实验室,浙江舟山316022 [3]浙江扬帆通用机械制造有限公司,浙江舟山316000

出　　处：《浙江海洋大学学报（自然科学版）》2023年第6期518-523,共6页Journal of Zhejiang Ocean University：Natural Science

基　　金：浙江省自然科学基金联合基金项目(LHZ21E090003);舟山市定海区院地科技合作项目(2020C51004)。

摘　　要：为寻求最优参数设置,以达到准确预报实船振动响应的目的,以一艘科考船为例,先建立整船的三维有限元模型,分析全船结构的固有模态,然后在主机和螺旋桨的共同激励作用下,研究阻尼、附连水质量和约束形式等参数对全船振动特性的影响。结果表明,结构阻尼对船体振动的影响很小,而附连水质量和约束设置的改变对船体的振幅大小及振动频率影响较大,其中对振幅的影响较为明显,振动频率仅在低频区域发生变化。In order to find the optimal parameter setting and achieve the purpose of accurately predicting the vibration response of the actual ship,taking a scientific research ship as an example,the three-dimensional finite element model of the whole ship is established,and the intrinsic modes of the whole ship structure are analyzed.Then under the joint excitation of the main engine and propeller,the effects of damping,attached water mass and constraint form on the vibration characteristics of the whole ship are studied.The results show that the damping of the structure has little effect on the vibration of the hull,while the change of the attached water mass and the constraint setting has a great effect on the amplitude and vibration frequency of the hull.The effect on amplitude is obvious,and the vibration frequency changes only in the low frequency region.

关 键 词：船体振动 结构阻尼 约束 有限元 

分 类 号：U661.44[交通运输工程—船舶及航道工程]